126426243 has 4 divisors (see below), whose sum is σ = 168568328. Its totient is φ = 84284160.

The previous prime is 126426233. The next prime is 126426271. The reversal of 126426243 is 342624621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342624621 = 3 ⋅114208207.

It is not a de Polignac number, because 126426243 - 2⁸ = 126425987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 126426243.

It is not an unprimeable number, because it can be changed into a prime (126426233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21071038 + ... + 21071043.

It is an arithmetic number, because the mean of its divisors is an integer number (42142082).

Almost surely, 2^126426243 is an apocalyptic number.

126426243 is a deficient number, since it is larger than the sum of its proper divisors (42142085).

126426243 is an equidigital number, since it uses as much as digits as its factorization.

126426243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42142084.

The product of its digits is 13824, while the sum is 30.

The square root of 126426243 is about 11243.9425025211. The cubic root of 126426243 is about 501.8944702327.

The spelling of 126426243 in words is "one hundred twenty-six million, four hundred twenty-six thousand, two hundred forty-three".